Romans 8 concludes by saying our confidence is in the God who justified and the Christ who died in our place, such that nothing could separate us from him. Romans 9 is crucial to this-- can we trust God, given how Israel is in unbelief? So the purpose of this chapter is to vindicate God's dealings with Israel.
Notice that little word "us"?
Does this "us" include anyone whom God doesn't draw/drag to Jesus to give him/her *His* "saving faith"?
Jesus: "NONE can come to me unless my Father draws (drags) him ......"